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implemented remove_handler()

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This commit is contained in:
Markus Fröschle
2014-09-30 15:41:05 +00:00
parent 0decb9678a
commit da04ded10b
2 changed files with 15 additions and 3 deletions
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15
BaS_gcc/if/driver_vec.c
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@@ -139,7 +139,8 @@ static struct mmu_driver_interface mmu_interface =
{ {
.map_page_locked = &mmu_map_data_page_locked, .map_page_locked = &mmu_map_data_page_locked,
.unlock_page = &mmu_unlock_data_page, .unlock_page = &mmu_unlock_data_page,
.report_locked_pages = &mmu_report_locked_pages .report_locked_pages = &mmu_report_locked_pages,
.report_pagesize = &mmu_report_pagesize
}; };
static struct generic_interface interfaces[] = static struct generic_interface interfaces[] =
@@ -193,6 +194,8 @@ static struct generic_interface interfaces[] =
} }
}; };
extern void remove_handler(void); /* forward declaration */
/* /*
* this is the driver table we expose to the OS * this is the driver table we expose to the OS
*/ */
@@ -200,10 +203,18 @@ static struct driver_table bas_drivers =
{ {
.bas_version = MAJOR_VERSION, .bas_version = MAJOR_VERSION,
.bas_revision = MINOR_VERSION, .bas_revision = MINOR_VERSION,
.remove_handler = NULL, .remove_handler = remove_handler,
.interfaces = interfaces .interfaces = interfaces
}; };
void remove_handler(void)
{
extern void std_exc_vec(void);
uint32_t *trap_0_vector = (uint32_t *) 0x80;
*trap_0_vector = (uint32_t) std_exc_vec;
}
void __attribute__((interrupt)) get_bas_drivers(void) void __attribute__((interrupt)) get_bas_drivers(void)
{ {
__asm__ __volatile( __asm__ __volatile(

3
BaS_gcc/include/driver_vec.h
View File

@@ -265,6 +265,7 @@ struct mmu_driver_interface
int32_t (*map_page_locked)(uint32_t address, uint32_t length, int asid); int32_t (*map_page_locked)(uint32_t address, uint32_t length, int asid);
int32_t (*unlock_page)(uint32_t address, uint32_t length, int asid); int32_t (*unlock_page)(uint32_t address, uint32_t length, int asid);
int32_t (*report_locked_pages)(uint32_t *num_itlb, uint32_t *num_dtlb); int32_t (*report_locked_pages)(uint32_t *num_itlb, uint32_t *num_dtlb);
uint32_t (*report_pagesize)(void);
}; };
union interface union interface
@@ -291,7 +292,7 @@ struct driver_table
{ {
uint32_t bas_version; uint32_t bas_version;
uint32_t bas_revision; uint32_t bas_revision;
uint32_t (*remove_handler)(); /* calling this will disable the BaS' hook into trap #0 */ void (*remove_handler)(void); /* calling this will disable the BaS' hook into trap #0 */
struct generic_interface *interfaces; struct generic_interface *interfaces;
}; };